Will this work? I have an old boob tube that I want to use as a bedroom TV but it only has composite inputs (Red/White/Yellow). I'm hoping a converter cable could let me pump the GTV through the cord to the TV. Endgame is being able to watch Netflix on it. Would this work? Any ideas? I see that there are a lot of $30+ boxes that seem to do this but I'm hoping just a cable will work. Thanks in advance!